380 
GEOGRAPHICAL ZOOLOGY. 
[PART IV. 
Family 15.— LYGODONTIDjE. (11 Genera, 35 Species.) 
General Distribution. 
Neotropical 
Sub-regions. 
Nearctic 
Sub-regions. 
PALzEARCTIC 
Sub-regions. 
Ethiopian 
Sub-regions. 
Oriental 
Sub-regions. 
Australian 
Sub-regions. 
— 
— 
1 . 2.3 — 
1 . 2 .3 . 4 
1 
The Lycodontidae, or Fanged Ground Snakes, are confined to 
the Ethiopian and Oriental regions, over the whole of which they 
range, except that they are absent from Madagascar and extend 
eastward to New Guinea. The genera have often a limited dis- 
tribution : — 
Lycodon ranges from India and Ceylon to China, the Philip- 
pines, and New Guinea; Tetragonosoma , the Malay Peninsula 
and Islands; Leptorhytaon and Ophites, India ; Cerccispis, Ceylon ; 
and Cyclocorus, the Philippines. The African genera are Bocedon, 
Lycophidion, Holuropholis, Simocephalus , and Lamprophis, the 
latter being found only in South Africa. The species are nearly 
equally abundant in both regions, but no genus is common to 
the two. 
Family 1 6 . — AMBLY CEPH ALIDAL (5 Genera, 12 Species. ) 
General Distribution. 
N eotropical 
Sub-regions. 
Nearctic 
S UB-REGIONS. 
Pal^earctic 
Sub-regions. 
Ethiopian 
Sub-regions. 
Oriental 
Sub-regions. 
1 Australian 
Sub-regions. 
— 2.3 — 
— 
— 
— 
3.4 
3 ! - 
The Amblycephalidse, or Blunt Heads, are very singularly 
distributed, being nearly equally divided between Tropical 
America and the eastern half of the Oriental region, as will be 
seen by the following statement of the distribution of the 
genera : — 
Amblycephalus (1 sp.), Malay Peninsula to Borneo and the 
Philippines ; Pareas (3 sp.), Assam, China, Java, and Borneo ; 
